AS11470 RSNA-ASN

RSNA-ASN is the Radiological Society of North America, the professional society for radiologists, medical physicists and imaging professionals, based in Oak Brook, Illinois and founded in 1915. It announces three /24s out of 192.203/16 — 768 addresses — with two observed BGP neighbours.

What it's used for

The society's own infrastructure. RSNA is not a hospital, a university or a service provider: it publishes peer-reviewed journals (Radiology and its family titles), runs a very large annual scientific meeting in Chicago, produces continuing-education material, and funds research grants through its Research & Education Foundation. All of that is delivered from a headquarters operation, and a few hundred addresses behind a couple of upstreams is a proportionate footprint for it. Two observed neighbours rules out any carrier or hosting role — this network buys transit, it does not sell it.

Notable

All three prefixes register to RSNA, org Radiological Society of North America. Announcer and registrant are the same body, so there is no leased-space question to resolve. The three /24s are non-contiguous within 192.203/16 (.117, .125, .126), which is normal for old Class C assignments handed out one block at a time rather than as an aggregate.

Interesting

The name invites two plausible misreadings. A "Society of North America" sounds like it might be a membership umbrella carrying other organisations' traffic, and the medical-imaging subject matter suggests a clinical or research network. Neither is what the routing shows. This is an association's corporate network, and the imaging expertise it is famous for lives in its publications and its meeting, not in its address space.